Bolt Wear

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  • RapidTransit
    E-Body Man
    • Jun 2004
    • 400

    #1

    Bolt Wear

    Some History, skip to the bottom if you don't like history lessons.

    I was just reading an article in Mopar Collectors Guide about a buildup of a ball stud Hemi, since there is only one in existance this is the first time I have read about building one. Ball Sud Hemis were supposed to be the sucessor of the Hemi back in 71 they used full swirl port heads in a hemisperical chamber. Instead of an adjustable type of shaft mounted rocker system normally found in a Mopar the engineers used non adjustable ball studs to hold the rockers down. A few problems arose one you couldn't ajust the valvetrain as the components wear you had to rebuild it making it only usable in drag racing but since Chrysler pulled out it was useless and Hemis and Six Packs were already a headache at dealerships plus the usual rising insurance gas etc finally killed the idea and it was scraped. During the 80's when Chrysler was in major financial trouble they liquidating assets, selling the ball studs at 5 cents a pound, only one survived and was displayed in a museum. Some nut job decided to buy it and build it up.

    //End History

    To fight the wear they used Micropolishing and Casidiam plating http://www.casidiam.com/ something not available during the early 70's and is being used on a HiPo Hemi. Why not on an Automag bolt to prevent bolt wear to run a lower dwell time? Just a thought, wouldn't hurt for some extra insurance.
    Gun: AGD eMag with LvL10
    Cars: 1991 Lexus LS400. 1970 Plymouth 'Cuda 440-4, Auto, 1 of 816. 1970 Dodge Challenger 318 S/E, soon to be a 440-6 with a 5 speed, and painted Sublime green
  • Chronobreak
    Rec Poster
    • Mar 2003
    • 5055

    #2
    i dont know about the plating or how well that would work, if at all

    however a number of automag users have been or had their bolts polished to increase efficency.

    Comment

    • RapidTransit
      E-Body Man
      • Jun 2004
      • 400

      #3
      Spring pressure usually starts around 100lbs and can go over 300lbs and think of how many times a valve is openening and closing every second. The rocker head stud has to be very tough a coating that can survive that could definitely last in an automag. Maybe Vetter can put it through a stress test.
      Gun: AGD eMag with LvL10
      Cars: 1991 Lexus LS400. 1970 Plymouth 'Cuda 440-4, Auto, 1 of 816. 1970 Dodge Challenger 318 S/E, soon to be a 440-6 with a 5 speed, and painted Sublime green

      Comment

      • BerSerK
        The Thread Killer
        • Apr 2005
        • 166

        #4
        Originally posted by Chronobreak
        however a number of automag users have been or had their bolts polished to increase efficency.
        do they polish just the outside of the bolt or everything ?

        Comment

        • Chronobreak
          Rec Poster
          • Mar 2003
          • 5055

          #5
          Originally posted by BerSerK
          do they polish just the outside of the bolt or everything ?
          i think most people were just doing the bolt stems, i would assume some did the sides/face but dono what the overall effect was...or worth doing

          Comment

          • hipster
            Registered User
            • May 2005
            • 106

            #6
            I would think you would have to find a way to polish the inside shaft of the bolt for better efficiency


            yes / no ?????

            Comment

            • Z-man
              You guys lost me
              • Jul 2001
              • 2202

              #7
              That is actually a pretty cool idea! From the playing I did with my old Mags I seem to recall that a stock bolt had a life of about ~100,000 rounds with the largest wear coming from the "lip" of the bolt where the sear caught and second allong the length of the bolt from the springs wearing on it.

              I wonder about the cost of a plating like that. My thinking is that for it to be a practical solution it would effectivly need to x2+ the life of the part and cost equal to or less than the equivalent number of bolts you would have bought.

              EX.

              The coating costs ~$60 (total with shipping and all that) and effectivly doubles the life of the bolt giving you about ~200,000 rounds before replacement (or recoating if that works). The cost of a new bolt from AGD is ~50 (total with shipping and all that). Overall it would be cheaper to buy a new bolt.

              But! I have no idea about how this stuff would hold up and it certainly looks neat! I think Ill find out what it would cost to have something coated and if the price comes down based on the numbers you send them.

              Cool find!


              Leech MY Images Will You?!?!

              Comment

              • Indignant

                #8
                Interesting read.

                Comment

                • Z-man
                  You guys lost me
                  • Jul 2001
                  • 2202

                  #9
                  OH MAN! I just had a new thought! As I was talking to the general manager named "Rex" and I thought,


                  DUUUUDE! COAT THE WHOLE FREAKING MARKER!!! Imagine! the whole thing would last forever!!!

                  OK so that might be overkill but dang that would be pimp! makes type 3 ano look like sissy girl!


                  Leech MY Images Will You?!?!

                  Comment

                  • BigEvil
                    www.BigEvilOnline.com

                    • Feb 2005
                    • 9333

                    #10
                    I wonder if it would be possible to only coat the lip and leave the bolt stem and body uneffected?

                    Is anyone looking into pricing ???

                    Comment

                    • Indignant

                      #11
                      Originally posted by Z-man
                      The coating costs ~$60 (total with shipping and all that)

                      yeah.

                      Comment

                      • RapidTransit
                        E-Body Man
                        • Jun 2004
                        • 400

                        #12
                        Originally posted by Z-man
                        OH MAN! I just had a new thought! As I was talking to the general manager named "Rex" and I thought,


                        DUUUUDE! COAT THE WHOLE FREAKING MARKER!!! Imagine! the whole thing would last forever!!!

                        OK so that might be overkill but dang that would be pimp! makes type 3 ano look like sissy girl!
                        Yeah I was just thinking about every moving part there is in a Mag and reduced friction. If we could do a group thing maybe try and convince AGD to send their stuff out there.
                        Gun: AGD eMag with LvL10
                        Cars: 1991 Lexus LS400. 1970 Plymouth 'Cuda 440-4, Auto, 1 of 816. 1970 Dodge Challenger 318 S/E, soon to be a 440-6 with a 5 speed, and painted Sublime green

                        Comment

                        • FallNAngel
                          Registered User
                          • Apr 2003
                          • 1076

                          #13
                          Originally posted by Indignant
                          yeah.
                          I could be wrong, but I think that was just a made up number for example purposes...
                          O-Ring Kits FS: Matrix/DM4 / Freestyle / Intimidator / Shocker SFT & More!
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                          Comment

                          • Z-man
                            You guys lost me
                            • Jul 2001
                            • 2202

                            #14
                            Sorry I was out running about and yes those were made up numbers... I am calling them back later today to get real numbers, time fames and estimates and crap.


                            Leech MY Images Will You?!?!

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